Last Thursday, I tuned into a college radio station just as one DJ was asking his three fellow DJs what they learned that day. The first woman responded, "I learned a really hard riff in one of my choir songs." Another woman said an article she wrote was on the front page of a newspaper. The third woman said she'd learned to script what to say on-air.
That third response surprised me. I always thought that as long as I had my playlist in front of me and a general sense of what I planned to say, scripting wasn't necessary--especially on a casual, noncommercial college station.
If a DJ is more comfortable scripting air breaks, though, why not? As long as the delivery is natural, who says you can't write out what you want to say ahead of time?